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//===- LTOBugPoint.h - Top-Level LTO BugPoint class -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class contains all of the shared state and information that is used by
// the LTO BugPoint tool to track down bit code files that cause errors.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/Module.h"
#include "llvm/System/Path.h"
#include <string>
#include <fstream>
class LTOBugPoint {
public:
LTOBugPoint(std::istream &args, std::istream &ins);
~LTOBugPoint();
/// findTroubleMakers - Find minimum set of input files that causes error
/// identified by the script.
bool findTroubleMakers(llvm::SmallVector<std::string, 4> &TroubleMakers,
std::string &Script);
/// getNativeObjectFile - Generate native object file based from llvm
/// bitcode file. Return false in case of an error. Generated native
/// object file is inserted in to the NativeInputFiles list.
bool getNativeObjectFile(std::string &FileName);
std::string &getErrMsg() { return ErrMsg; }
private:
/// LinkerInputFiles - This is a list of linker input files. Once populated
/// this list is not modified.
llvm::SmallVector<std::string, 16> LinkerInputFiles;
/// LinkerOptions - List of linker command line options.
llvm::SmallVector<std::string, 16> LinkerOptions;
/// NativeInputFiles - This is a list of input files that are not llvm
/// bitcode files. The order in this list is important. The a file
/// in LinkerInputFiles at index 4 is a llvm bitcode file then the file
/// at index 4 in NativeInputFiles is corresponding native object file.
llvm::SmallVector<std::string, 16> NativeInputFiles;
/// BCFiles - This bit vector tracks input bitcode files.
llvm::BitVector BCFiles;
/// ConfirmedClean - This bit vector tracks input files that are confirmed
/// to be clean.
llvm::BitVector ConfirmedClean;
/// ConfirmedGuilty - This bit vector tracks input files that are confirmed
/// to contribute to the bug being investigated.
llvm::BitVector ConfirmedGuilty;
std::string getFeatureString(const char *TargetTriple);
std::string ErrMsg;
llvm::sys::Path TempDir;
/// findLinkingFailure - If true, investigate link failure bugs when
/// one or more linker input files are llvm bitcode files. If false,
/// investigate optimization or code generation bugs in LTO mode.
bool findLinkingFailure;
private:
/// assembleBitcode - Generate assembly code from the module. Return false
/// in case of an error.
bool assembleBitcode(llvm::Module *M, const char *AsmFileName);
/// relinkProgram - Relink program. Return false if linking fails.
bool relinkProgram(llvm::SmallVector<std::string, 16> &InputFiles);
/// reproduceProgramError - Validate program using user provided script.
bool reproduceProgramError(std::string &Script);
/// identifyTroubleMakers - Identify set of inputs from the given
/// bitvector that are causing the bug under investigation.
void identifyTroubleMakers(llvm::BitVector &In);
};
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